1 public class StopThread {
 2 
 3     private static boolean stopRequested;
 4 
 5     public static void main(String[] args) throws InterruptedException {
 6 
 7         Thread thread = new Thread(new Runnable() {
 8             @Override
 9             public void run() {
10                 int i = 0;
11                 while (!stopRequested) {
12                     i++;
13                 }
14             }
15         });
16         thread.start();
17         TimeUnit.SECONDS.sleep(1);
18         stopRequested = true;
19 
20     }
21 }

public class StopThread {

    private static boolean stopRequested;

    public static void main(String[] args) throws InterruptedException {

        Thread thread = new Thread(new Runnable() {
            @Override
            public void run() {
                int i = 0;
                while (!stopRequested) {
                    i++;
                    System.out.println("i=" + i);
                }
            }
        });
        thread.start();
        TimeUnit.SECONDS.sleep(1);
        stopRequested = true;

    }
}